|Talk about Ronja optical datalink on WSFII London - Karel Kulhavy|
Ronja is a DIY project of optical wireless datalink hardware. Karel Kulhavy of Twibright Labs, creator of the project, held a talk about Ronja on WSFII (World Summits on Free Information Infrastructures) in London in 2005. This is the complete recording of the talk, cleaned up (ummmm....ummmm.... edited out, otherwise unabridged)
Keywords: Ronja; Twibright; datalink; data link; optical; wireless; talk; WSFII; London; DIY; user controlled technology; open source; free; technology
|Transhypnagogia - Grayscale Images - Karel Kulhavy|
Computer generated shapes patterns and hallucinations. This time Transhypnagogia was debugged to handle grayscale images properly. The computer got various pictures for inspiration and tried to mimic their structure. The depth of understanding is varied during each clip, which produces patterns of changing style. These original images were ball bearings, computer game, photograph of landscape, photograph of crowd, photograph of bodybuilders...
Keywords: artificial creativity; hallucinations; forms; psychedelic; computer generated textures
|Twibright Stickblaster forced air charcoal cooking stove - Karel Kulhavy|
à¹à¸à¸²à¹à¸à¸à¹à¸² Thai charcoal stove with added DIY aluminium air duct and 12V 0.23A 60mm PC fan. Regulated by 3-4.5-6-7.5-9-12 DC adapter. Shortens the cooking time 5.5 times compared to the original version without fan. Net cooking power output (going into the water) is 2.6kW, compared to original 470W. Big gas cooker at maximum has 1.3kW. Stove internal diameter 18cm (grate) or 19cm (top)
Keywords: stove; Twibright; Labs; charcoal; camping; DIY; cheap
|Transhypnagogia - Computer Generated Forms - Karel Kulhavy|
Do androids dream of electric sheep? Computers can dream of dogs, frogs, juggling centipede rabbits, lamas, groups of snowman children, angry faces, cats, ostriches, galloping horses and other shapes. A simple algorithm takes a visual input - in this case an excerpt from Voynich Manuscript http://en.wikipedia.org/wiki/File:Voynich.png - and tries to randomly assemble elementary forms encountered in the input...
Keywords: artificial creativity; hallucinations; forms; psychedelic
|Measuring coil self-capacitance with the S1-99 oscilloscope - Karel Kulhavy|
Shows the S1-99 100MHz Russian oscilloscope and a method how to measure coil self-capacitance by exciting it into self-resonance and counting on the screen.
Keywords: oscilloscope; instructional; electronics; radio engineering; Russian; RF
|Increase power of Thai/Cambodia charcoal stove from 0.45 to 2.6 kW - Karel Kulhavy (uploader)|
Twibright Labs developed an electric charcoal stove fan that increases the power of Thai / Cambodian charcoal cooking stove by 450%. Easy to make with scissors and paper template. Cooking power is adjustable in a wide range. Starting the fire is fast. Original cooking power 450 W, with the fan 2.6 kW. A big gas cooker has only 1.3 kW!
Keywords: Thailand Cambodia charcoal stove fan furnace poverty Twibright Labs open source technology hardware user controlled technology
|Making Arcs with Twibright Exciter Pedal Power Generator - Karel Kulhavy, Twibright Labs|
Twibright Exciter is an open source product of pedal power generator at http://ronja.twibright.com/exciter/In this video we hack it into a series mode and using thick electrician insulating gloves, thick insulated wires and other safety measures, we are making arcs. In this hacked mode Exciter produces over a kilovolt ignition spikes. But normally Exciter is perfectly safe and contains a reliable voltage limiter for 350V DC, which allows it to power ordinary switched mode appliances like mobile ...
Keywords: generator SEIG electric arc experiment high voltage